Rotary valve



l. R. WARREN. ROTARY VALVE. APPUCATION FILED AUG. 147, ,1921.

Patented Mar. 21, .1922.

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ROTARY VALVE. APPLICATION vFILED UG, 17, 192|.

Patented Mar. 21, 1922.

UNITED `STATES PATENT OFFICE.

JOHN R. "WARREN, 10Fk GRAND RAPIDS, MICHIGAN, ASSIGNOR TO HIMSELF AND DONALD J'. CAMPBELL, OF MUSKEGON HEIGHTS, MICHIGAN, AND CHARLES E. JOHNSON, PAUL R. BEARDSLEY, AND CARL P. DAMM, ALL OF MUSKEGON,

MICHIGAN, TRUSTEES.

ROTARY VALVE. v

To all whom t may concern.'

Be it known that I, JOHN R. VVAnnnN, a citizen of the United States, residingV at Grand Rapids, in the'county of Kent and State of Michigan, have invented new and useful Improvements in Rotary Valves, of which the following is a. specification.

The present invention relates to rotary valves, such as vare employed `in connection with internal-combustion engines; and its object is to provide a valve of that character having a cast outer member and an inner, passage-forming, member a portion of which is embedded in the outer member in the casting thereof.

This and yany other objects hereinafter appearing are attained by, and the invention finds preferable embodiment in, the structures hereinafter particularly described in the body of this specification and illustrated by the accompanying drawings, in which z- Figure 1 is an axial sectional view of a rotary valve; f

Figure 2 is a lefthand end view thereof;

Figure 3 is a right-hand end View of the same; y y

Figure 4 is atransverse sectional view of the same taken on a plane corresponding to line 4-4 of Figure l;

Figure 5 is a side lview of the inner member of said valve and an axial sectional view of outwardly extending annular portions thereof and of the sand core of the mold wherein the outer member of the valve is so cast as to imbed such annular portions within it;

Figure 6 is a like view of a portion of said sand core and of the valves outer member;

Figure 7 is a view similar to Figure 4, but showing a modified construction; and

Figure 8 is a cross-sectional view of another valve embodying` my invention.

In the embodiment of the invention chosen for illustration by the drawings and for detailed description in the body of this specilication, a rotary valve for controlling the intake of the engine-operating fluid to the cylinders of an internal-combustion engine and the exhaust of the products of combustion therefrom is shown, such valve as Speccation of Letters Patent. Patented Mar, 21, 1922, Application iled Augustk17, 1921. Serial No. 492,954'.

shown in Figures 1, 2, 3, 4, 5, 6 and 7 controlling three such cylinders (not shown), a pairl of such valves being employed in connection with a six-cylinder engine.` This valve comprises two members; first, anfinner cylindrical member 1 preferably formed of sheet steel and comprising the outer shell 2 and inner walls 3 whereby the passages 4 are Vformed for expulsion of' the 4products of combustion through the valve from the exhaust ports 5 communicating with the three .engine cylinders; and second, the cast outer cylindrical hollow member 6, whose outer surface bears rotatably in the valves cham ber, not shown, this outer member surrounding said inner member 1 and being spacedl therefrom to provide a passage 7 for supplying from the annular intake port 8 the engine-operating fluid to the cylinders through the ports 9. The two portions of the outer member 6 on the opposite sides of Y haust ports 5 and separating them from 'the intake passage 7. These two members 1 and 6 of the valve are joined together by casting the outer member 6 around a sand core 13 surrounding the inner member 1, the outer edges of the supporting portions 10, 11, 12 of the inner member extending outwardly beyond the sand core and being embedded in the casting operation of the outer member 6 within it. Some of these supporting portions of the inner member, as 12 are shown as extending not only radially outwardly from, but toward an end of, the inner member 1. The inner walls 3 of the inner member 1 may be formed with flange portions 14 as shown in Figure 7 which flanges are joined, as by welding, tothe inner surface of the inner members shell 2.

In Figure 8 another form of valve is shown in cross section embodying the basic principle of my invention. In this view the valve has ports 16, 17, a passage 18 between said ports being formed by the sheet metal inner member 19 whose ends 20 are em-V bedded in the cast outer member 61 in the casting thereof. To effect such casting the sand core indicated at 181 is formed abouty the inner member 19 leaving its ends 2O eX- tending outwardly from the sand core to be embedded in the outer member as aforesaid.

The invention being intended to be pointed out in the claims, is not to be limited to or by details of construction of the particular embodiment thereof illustrated by the drawings or hereinbefore described.

I claim: i

1. In a rotary valve for internal-combustion engines; an inner hollow cylindrical member having an outwardly extending supporting portion, and ports communicating with the engines cylinder; a cast outer hollow cylindrical member spaced from said inner member and rotatably bearing in the valves chamber and having ports communicating with the engines cylinder and having embedded in said outer member in the casting thereof said portion of said Ainner member. i

2. In a rotary valve for internal-combustion engines; an inner hollow cylindrical member having an outwardly extending supporting portion of separate piece therefrom and joined thereto, and ports cominunicating with the engines cylinder; a cast outer hollow cylindrical member spaced from said inner member and rotatably bearing in the valves chamber and having ports communicating with the engines cylinder and having` embedded in said outer member in the casting thereof said portion of-said inner member.l

3. In a rotary valve for internal-combustion engines; an inner hollow cylindrical member having an outwardly extending supporting portion annularly shaped of separate piece therefrom and joined thereto,

and ports communicatingv with the engines cylinder; a cast outer hollow cylindrical member spaced from said inner member and rotatably bearing in the valves chamber and having ports communicating with the engines cylinderand having embedded in said outer member vin the casting thereof said portion of said inner member.

4. In a rotary valve for internal-combustion engines; an inner hollow cylindrical member havino' ports communicating with the engines cyIinder and a supporting por tion annularly 'shaped of separate piece therefrom and joined thereto and extending outwardlyA Vfrom and toward an end of the valve; a cast outer hollow cylindrical member spaced from saidinner member and rotatably Vbearing in the valves chamber and having ports communicating with the engines cylinder and having embedded in said outer member in the casting thereof said portion of said inner member'.

. 5. In arotary valve forinternal-combustion engines; an inner hollow cylindrical member lhaving ports communicating with the engines cylinder `and outwardly extending anges ,surrounding said ports; a cast outer hollow cylindrical member spaced from said innerrmember and rotatably bearing in the valves chamber and having ports communicating with the engines cylinder and having embedded in said outer member inthe casting ,thereof said flanges of said inner member. l Y

6. In a rotary valve for internal-combustion engines; an inner member havingl a passage communicating with the engines Y cylinder; a cast outer cylindrical member rotatably bearing in the valves chamber and having embedded in said outer member in the casting thereof an outwardly extending :portion of said inner member.

'hereunto set Michigan, this In testimoni whereof I have my hand, at (xrand Rapids,

8th day of August, 1921.

` JOHN R.. WARREN. 

